Every blog is going to copy the odds for who the Chicago Bears will sign at quarterback in free agency from some sportsbook who e-mailed it to a bunch of media outlets. The reality is that sportsbooks put extremely low limits, and most do not take bets on things such as this due to leaks and potential liability.
They create thee odds to promote the name of their sportsbook, and it works, because so many sites will rely on these odds. They are not putting that much time into these, but when people see them, they react as if they know.